<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link href='https://cdn.bootcdn.net/ajax/libs/minireset.css/0.0.2/minireset.min.css' rel='stylesheet'/>
    <title>适口2</title>
</head>
<body>
    <style>
        body{
            width: 100vw;
            height: 100vh;
            display: flex;
            justify-content: space-between;
        }
        :root{
            font-size:calc(100vw / 375);
        }
        div:nth-of-type(1){
            width: 177.5rem;
            height: 667px;
            background-color: red;
            color: white;
        }
        div:nth-of-type(2){
            width: 177.5rem;
            height: 667px;
            background-color: black;
            color: white;
        }
    </style>
    <div>1</div>
    <div>2</div>
</body>
</html>